Window-ventilator.



G. HINTZL W.IE. ALTHOUSE.

\ WINDOW VENTILATR.

APPLIOATION FILED DB0.1o,19oa.

Patentedug. 31, 1909. l

www 5. Hmtz WIr/fm E. Aff/bam u witnesses which erarpspgrnnr fron.

maman e. z-nnrz AND WILLIAM aLTHoUsn; or READING, ennnsrrivame.

WINDOW-VENTILATOR.

Specification o Letters Patent.

t Application led December 10, 1908.

connection with the accompanying drawings and specilically pointed outin the claim.

Figure 1 is a perspective view` of a ventilator embodying ourimprovements. Fig. 2

a plan view of the saine. Fig. 3 is a crosssection on the line 3-3 ot'Fig. 2.

A represents the partition-hoard oi plate, having an air-inlet aperture1 coininunicating with an open-top interior hood or box 2, is formed asshown by an inclined all 3 and separately forincd triangular endwalls l.These end-walls are formed with bolting lugs 5 having screw-openings tocure the saine to the partition plate A; and one o said lugs is providedwith a' slot G adapted to-engage one end of a Spring-metal deteiit` T,so as to permit of the latter being secured to the plate A in the act ofscrewing the lugged end-wall thereto; the function of said detentiheing`hereafter referred to. A

trunnion t5 is also provided on each wallplate upon which to pivot thebox-lid. rl`his hinged lid comprises a cover plate tor the open top otthe hex 2, and segmental endpieces "il secured to the side edgesthereot'so as to lie close to the end-walls 4 of the hoX when the lid is closeddown. These segmental end-pieces have apertures 12 in which thetruniiions S are entered so as to hinge the lid to the hex; and thecurved riin 153 of one ot' them provided with notches 1l adapted to Aheengaged by the free end of the spring deten't 7 already referred to, soas to he held hy the latter in easily adjusted open position as desired;while the curved rini ot the other is provided with a projecting step 9adapted to strike against the adjacent lug 5 when the lid is raised toapproximately vertical position. When thus raised, or in ahyintermediate position, the segmental end-pieces 11 serve as upward ex-Patent'ed Ang. 31, E909. seriai No.4 466,755.

tensions of the fixed end-walls l of the box, whereby the air admittedthrough the aperture 1, is compelled to rise vertically in passing intothe room, While at Athe same time theriins serve to support Vand limitthe' opening of the lid as stated.

To provide for adjusting the length of the partition plate A as ispractically desirable, we employ a sliding extension 15 so connected asto be always maintained in alineinent with said plate as indicated. For'this purpose one or both ends of the plate A are rabbeted vertically as*shown at 16, to receive the overlapping correspondingly rabbeted slidingeX v tension 15; and is also rahheted horizontally as indicated at 17,17,.to receive the guide plates 18, 18 which are secured to the'top andbottom edges of the extension 15. These guide plates ot' the slidingextensions thus lie flush with the top and bottom edges of the plate A;and vthey are each formed with a longitudinal tiange 19 overlapping thelatter, and with a slot 20 which engages a lpin 21 on' the plate, sothat in sliding the extension l5 upon the 'i'abheted end otl the plateto vary the length of the latter, the extension will. at all times bemaintained in the same' plane and in direct alineinent with the plateitself by the special connection described.

lVhatwe claini is:` A ventilator comprising an apertiii'ed partitionplate, an open-top box communicating with said aperture and havingseparate triangular-shaped end-walls each provided with a pivotingtrunnion and bolting lugs, one ofwhich latter has a detei'it-e'ngagingslot; a cover plate having separately formed segmental ends eachot'which ,is provided with a pivot aperture engaged upon one of saidtrunnions and one of which is also formed with a stop-projection andWitha notched riin, and a. spring detent secured by said slotted holtinglug and adapted to engage said rim.

In testimony whereof, We affix our signatures", in the presence of twoWitnesses WILLIAM e. HINTZ. yWILLIAM n. AL'rHoUSn.

lvitnesses D. M. STEWART, W. G. STEWART.

